Effects of cardiac rehabilitation with and without meditation on myocardial blood flow using quantitative positron...

Area of Science:

• Cardiology
• Preventive Medicine
• Psychosomatic Medicine

Background:

• Psychosocial stress is a known risk factor for coronary heart disease (CHD), particularly prevalent in African-American populations.
• Standard cardiac rehabilitation (CR) protocols often lack systematic stress-reduction components.
• The Transcendental Meditation (TM) technique has shown promise in mitigating CHD risk factors and clinical events.

Purpose of the Study:

• To investigate the impact of incorporating the TM technique into standard CR for African-American patients with CHD.
• To evaluate the effects of CR with and without TM on myocardial flow reserve (MFR) and other CHD risk factors.

Main Methods:

• A pilot study involving 56 CHD patients assigned to four groups: CR, CR + TM, TM alone, and usual care.
• Myocardial flow reserve (MFR) was assessed using 13N-ammonia positron emission tomography (PET) at baseline and after 12 weeks.
• Data were analyzed for effect size (ES) to assess the magnitude of changes in MFR and secondary CHD risk factors.

Main Results:

• Patients in the CR + TM group showed a significant MFR improvement of +20.7% (ES=0.64).
• The TM alone group also demonstrated MFR improvement (+12.8%; ES=0.36), while CR alone showed modest changes (+5.8%; ES=0.17).
• Combined TM groups (CR+TM and TM alone) showed a 14% MFR increase compared to a 2.0% decrease in non-TM groups.

Conclusions:

• Adding TM to standard CR or using TM independently may enhance myocardial flow reserve in African-American CHD patients.
• These findings support the design of larger, controlled clinical trials to confirm the efficacy of TM in this population.
• The study highlights the potential of stress-reduction techniques like TM in cardiovascular disease management.